. . . . . . . . . "Spinus tristis" . . "Haemorhous purpureus" . . "Todd Belanger. 2016. Spinus tristis associated species with names lookup Haemorhous purpureus. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/4338230> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .